Thanks Caetano for your continuous response !
for example i am getting initial calculated quantity from bom explosion is like 332.453 then later on screen it is getting rounded to 333. in CUNI for unit of measure we did not specified any decimal settings bcz my other functional guys are not encouraging that solution not to use that settings.
I explored WORKORDRE_UPDATE BADI - there is a method BEFORE_UPDATE and table IT_COMPONENT - since it is importing only. we cannot change quantities here.
any other ways ?
Thanks,
Mahesh